Timing Advance System
ECM controls ignition timing advance based upon sensor input signals that reflect ignition timing needs. If timing problems are experienced, inspect input signals for proper operation:
- Battery Voltage
- Closed Throttle Position Switch
- Crankshaft Position Sensor
- Engine (Coolant) Temperature
- Ignition (START) Signal
- Mass Airflow Sensor
- Park/Neutral (Inhibitor) Switch. (Signal received from transmission control unit).
- Power Steering Pressure Switch
- Throttle Position Sensor
- Vehicle Speed Sensor